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Bonds
Descripción
(C5) Chemistry Mapa Mental sobre Bonds, creado por ??????????? el 08/12/2013.
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c5
chemistry
chemistry
c5
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Resumen del Recurso
Bonds
Ionic Bonding
Between metals and non-metal atoms
Atoms gain full outer shells by losing or gaining electrons
Atoms form positive and negatively charged ions
Strong electrostatic forces of attraction between ions
Properties
High melting and boiling points due to strong attraction between oppositely charged ions
Conduct electricity when molten or dissolved in water due to mobile ions, however does not when a solid
Covalent bonding
Between non-metals atoms only
Atoms gain full outer shell by sharing electrons
Two types of covalent bonding
Simple molecular
Small group of atoms share electrons forming small molecules
Each covalent bond is very strong
Forces attraction between molecules is weak
Properties
Low melting and boiling points
Due to the weak forces between molecules easily overcome
Do not conduct electricity in any state
Due to no mobile ions or delocalised electrons
Giant Macromolecular
Large number of atoms share electrons forming a giant macromolecule
Many strong covalent bonds formed
Two main examples of Giant Macromolecular bonds are both Carbon
Diamond
Each carbon atom form 4 strong covalent bonds
High melting and boiling point due to many strong covalent bonds
Very hard and strong
Does not conduct electricity
No free-moving ions or delocalised electrons
Graphite
Each carbon atom forms 3 strong covalent bonds
Leaves a 'free' delocalised electron on the outer shell
Conducts electricity
Due to delocalised electron
High melting and boiling point due to many strong covalent bonds
Lubricant because of layered structure
Weak forces between layers allow them to slide past each other
Metallic Bonding
Metals exist as a lattice of positively charged ions
Properties
High melting and boiling points
Due to strong attraction between ions and electrons
Conducts electricity
Due to delocalised outer shell electrons
Malleable since mobile electrons allow planes of metal ions to move past each other without breaking apart
Outer shell electrons are delocalised
Strong attraction between positive ions and negative electrons
Recursos multimedia adjuntos
uvu (image/png)
imagesCA2U1TIP (image/jpg)
bondin6.gif (image/gif)
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